Lid for fire extinguishers



Patented Oct. 20, 1925.

CLEMENS GRAAFIF, OF BERLIN, GERMANY.

LID FOR FIRE EXTINGUISHER-S.

Application filed May 26, 1915.

To all whom it may concern:

Be it known that I, CLnMnNs Gunner, a subject of the German Emperor, andresiding at 17 Linkstrasse, Berlin, 9, Germany, have invented certainnew and useful Improvements in a Lid for Fire Extinguishers, of whichthe following is a specification.

The present invention relates to a lid for fire extinguishers made onthe principle of a bridged lid, in which a tappet, serving to open a gasproducing cartridge arranged in the extinguisher, or the like is guidedwith a tight joint in such a manner that its stuffing box is protectedagainst all outward infiuences.

The accompanying drawing exemplifies a constructional form of thepresent invention. Fig. 1 is a section, and Fig. 2 is a side elevationof the jointing ring.

In the drawing a designates the container of a fire extinguisher of anysuitable shape, in the lid or bottom of which a jointing ring Z) isfastened, for instance, by soldering.

This ring is provided with lugs 0 and slots d. In this ring are furtherprovided an annular groove for receiving a packing material e and anannular face engaged by the flange 7 of an inset vessel or cartridge 9of a Well known construction.

The plate h, forming the lid proper of the extinguisher is provided withreinforcing webs z and a groove at its rim in such a manner, that itengages over the metallic rim k of the ring 5 securing the packing ring6 and the flange f of the cartridge 9 in position. By means of thisgroove in the plate h, when the packing ring 6 is compressed by screwingdown a screw spindle n (referred to below) for closing the lid, theplate will not bear on the said metallic rim is.

The screw spindle it having a square 0 is made hollow and serves as aguide for the tappet 19 passing with a tight joint through the plate h,and opening, when pressed down, a metallic foil a, forming the seal ofthe cartridge 9. This tight joint between the tappet p and the plate Itis obtained by means of a stufling box 9. When the lid is closed, thisstufiing box is protected against all outward influences by the screwspindle Serial No. 30,671.

at having at its lower end a bellshaped extension 7", which bearsagainst the plate 71. and completely covers the stufiing box.

For closing the lid the plate 71, is set upon the packing ring 6 andpressed against it bridge, when the spindle is unscrewed so that the lidmay be opened.

I claim:

1. A bridged lid for fire extinguishers, consisting of a lid plate, aseat on the fire extinguisher for said lid plate, a bridge detachablyfitted to the extinguisher, a screw spindle screwing in said bridge andadapted to press said lid against said seat, the said screw spindle andsaid lid plate being bored and adapted to act as a guide for a tappet,for operating the extinguisher, a stufiing box in said lid plate forsaid tappet, and on the lower end of said screw a bell, completelycovering said stufling box, when the bridge isin operative position.

2. A bridged lid for fire extinguishers, consisting of a lid plate, aseat for said plate having an annular groove containing packingmaterial, a bridge detachably fitted to the extinguisher, a screwspindle screwing in said bridge and adapted to press down said lidagainst the said packing, the said lid being provided with a. groove atits circumference and engaging over the inner rim of said annulargroove, the said spindle and lid plate being bored and adapted to act asa guide for a tappet, for operating the extinguisher, in said lid platea stalling box for said tappet, and on the lower end of said screw abell, completely covering said stufling box, when the bridge is inoperative position.

3. A bridged lid for fire extinguishers, consisting of a lid plate, aseat for said plate having an annular groove containing packingmaterial, a bridge detachably fitted with its feet in open ended slotsin the extin-.

guisher, a screw spindle screwing in said bridge and adapted to pressdown said lid against said packing, the said lid having a groove at itsOll'CUlTl'lGIGIlCG and engaging over the inner rim of said annulargroove, the said spindle and Saul lid plate being bored and adapted toact as a gulde for the tappet for operating the extinguisher, a stuflingbox in said lid plate for said tappet, and on the lower end of saidscrew a bell, 10 completely covering said stufling box, when the bridgeis in operative position.

In testimony whereof I afiix my signature.

CLEMENS GR-AAFF.

